Conductors : The conductors shall be plain annealed Copper in accordance with BS 6360.
Insulation : Insulation shall be PVC type TI1 as specified in BS 6746 and PE type 03 as specified in BS 6234.
Indivisual Screen : Each pair shall have a laminated AL mylar screening tape. The minimum overlap shall be 25%.
Laying Up : The required number of pairs shall be assembled together using the reverse layer or reciprocating lay technique. The
cable shall be so constructed that the pairs are in concentric layers.
Common Screen : Each pair shall have a laminated screening tape. The minimum overlap shall be 25%.
Bedding : An extruded bedding of type TM1 or type 6 black PVC compound in accordance with BS 6746 shall be applied over the binder tape.